Drum or like device



DRUM OR LIKE DEVICE Filed Feb. 13, 1931 five/12 07 Z/oraca l:- fla? 7,550

Patented Mar. 3, 1936 UNITED STATES PATENT OFFICE 20 Claims.

The present invention relates in general to drums, and more particularly to such drums as may be employed in pipe or conduit treating or wrapping devices.

One of the objects of the present invention is to provide an improved construction for the drum.

Another object is to provide a cast metal drum.

Another object is to provide an improved sealed joint orpacking.

Still another object is to provide an improved mechanical construction whereby the drum may be readily assembled into a machine or partially removed therefrom.

A further object is to provide heating means for the drum and joint so as to maintain a viscous liquid in free running condition.

There are other objects of my invention which, together with the foregoing, will be described in the detailed specification which is to follow. taken in conjunction with the accompanying drawing forming a part thereof.

In practicing my invention, I provide two pairs of semi-cylindrically shaped castings, each pair being adapted to be bolted together to form two telescope cylinders. The space between the two cylinders forms a container for fluid which it is adapted to apply to pipe or other circularly shaped material that is passed through theinterior of the inner cylinder. This improved driun is particularly adapted to be employed in my improved pipe treating machine disclosed in my copending application, Serial No. 466,814, filed July 9, 1930. By referring to this case, it will be seen that my improved drum is required to rotate and that pipe connections must be made to the container formed between the walls of the two cylinders. This necessitates a sliding joint between the stationary portion of the machine and the rotating drum.

In order to provide a fluid-tight connection in the present instance, I employ an expanding ring seal. This expanding ring may be of a plain or laminated construction.

Referring now to the drawing:

Fig. 1 is an end elevation of my improved drum, illustrating the fluid connections to it;

Fig. 2 is a medial cross section of the same along the line 2-2 of Fig. 1;

Fig. 3 is a detail illustrating one form of expanding ring;

Fig. 4 is a "cross sectional detail of a laminated ring; while Fig. 5 is another cross section detail of a modified form of laminated expanding ring.

In the drawing, like reference characters apply to similar parts throughout.

The reference characters I and 2 designate two semi-cylindrically shaped metal castings having inwardly extending lugs 3 by which the portions 1 and 2 may be bolted together to form a cylinder, and inwardly or outwardly extending flanged portions 5. A second cast iron cylinder is formed by the semi-cylindrically shaped castings 6 and 1 bolted together by bolts through inwardly extending lugs in the members 6 and 1. Ring members 9 are employed for fastening the two cylinders together at each end, forming a fluid tight container about the circumference of the inner cylinder comprising the sections I and 2. Openings It may be provided in the semi-cylindrically shaped castings I and 2 for the purpose of permitting fluid to pass upon any body introduced through the inner cylinder. A valve, such as is shown in my co-pending application referred to, may be employed for controlling theadmission of fluid.

The castings 6 and l, comprising the outer cylinder, are provided with raised portions ll into which grooves I2 are machined. In addition openings I3 are provided at intervals about the circumference of the outer cylinder for admitting fluid to the container formed between the cylinders as the whole drum is rotated. Expanding rings M are fitted into the grooves I2. These rings may be of the single type .such as is shown in Fig. 3, or may be of the laminated type shown in Fig. 4 and Fig. 5.

The type of ring illustrated in Fig. 3 only provides a sealed joint along its outer surface, whereas the laminated type of Fig. 4 provides a seal along three of its sides.

A ring member comprising the two pieces [5 and i6 is bolted together through the upstanding lugs 20 and 2|. The ring member I5 is provided with depending flanges l6 fitting into recesses .in the raised portion ll of the outer cylinder. The ring member which comprises the portions I5 and I6 is provided with the strengthening webs I1 extending from the upstanding annular flange I8, and also with pipe-like chambers or extensions 19 by which fluid connections are made to the drum container.

Connections are made to the ports or openings IS in the ring member through pipes'22. The

pipe 22 on the left, as shown in my co-pending application above referred to, may terminate in a drain valve, while the pipe 22 on the right will extend to the reservoir containing the fluid that is to be used in treating.

and upwardly.

of the grooves l2. be provided.

' vides a tight joint with respect to the ring member. However, this joint may be subject to leakage if the grooves I2 are not machined very closely. I prefer to employ for certain types of fluid material a type of laminated expanding rings of the type shown in Figs. 4 and 5.

In Fig. 4 the ring is made up in three sections, 23, 24 and 25. The section 25 tends to expand outwardly and force the sections 23 and 24 apart The sections 23 and. 24 ride against the ring member [5. It will be seen that this form of construction will cause the members 23 and 24 to ride against the ring member I5 at the top and also against the sides A fluid-tight joint will thus In Fig. 5 the expanding ring is made in two sections comprising the portions 26' and 21. The portion 21 tends to be forced upwardly, thereby raising the section 26 and at the same time spreading it so that a tight seal will be provided against the sides of the groove and also against the ring member.

It will be seen that'this particular construction by which a fluid-tight joint is made between a stationary and a rotatable member through the use of an expanding ring, is highly advantageous since a minimum amount of wear is likely to occur, the expanding rings being tempered. Furthermore, if there is any leakage after long periods of operation of the machine by reason of wear, a slightly different size expanding ring may be employed with equally asgood results as a new joint. 7

Attention is also directed to the fact that it is highly advantageous to obtain a cast metal drum instead of drums made of sheet metal, both from the standpoint of cheapness and also from the standpoint of strength and ruggedness, and accuracy of mechanical operation. By forming the drum of four separate castings renders it very easy to assemble and in the event of breakage of any one of the castings the whole drum may be repaired simply by replacing that casting. Also it will be seen that all members being split in halves, the lower half of each member may be I removed while the upper half is retained in the machine. This facilitates drawing the pipe to be treated up into the center of the annular structure without dismantling the mechanism. This action is described in my co-pending' application where I show removable sections in these parts instead of splitting them in halves. Splitting them in half reduces pattern and casting cost and makes them interchangeable.

While I have illustrated and described my improved packing as making a liquid-tight joint between a rotating drum and stationary parts of a pipe wrapping machine, it will be understood that the packing has a general application and may be used between any rotating and stationary member to provide a seal.

' On account of the closeness of the machine fitting between the-stationary and rotating parts,

scam

I prefer to provide a form of electric heating for keeping the material used in treating in a fluid state. This material may, at ordinary temperatures, be solid. The purpose of maintaining the liquid in fluid state is to prevent binding between the rotating and stationary parts or more specifically in the ring joint described. I accomplish this result by attaching electric heating elements 30 to the annular pipe I 8, or by mounting electrical heating units 3| of a curved type around the flange [5.

It is sometimes desirable to keep the material ,in the annular space between the rotating cylinders in a heated condition. In order to accomplish thisresult I attach similar electric strip heaters 32 to the inside of the inner cylinder. The electrical connections from one heater to another are obvious being laid out to collector or commutator rings 33 which engage brushes 34. In this manner electrical energy is fed into the heaters for the purpose of heating the fluid. It will be obvious that the heating unit should be electrically insulated from the metal parts. This may be accomplished by employing an asbestos wrapped strip heater or .by using any one of the numerous forms of strip heaters now on the market.

It will be understood that the invention is applicable not only to drums but to other similar or like devices.

While I have shown and described a specific embodiment of my invention, it will be understood that my invention may be variously modified and changed without departing from the spirit and scope thereof as set forth in the ap- I pended claims.

I claim: 1. A rotatable drum comprising a cylindrically shaped outer casting composed of a plurality of sections and a telescoping, cylindrically shaped 2. A rotatable drum comprising a cylindrical! shaped outer casting composed of a plurality of sections and a telescoping, cylindrically shaped inner casting of a plurality of sections and ring members mounted at opposite ends of the castings for uniting them into a unitary structure,

both inner and outer castings having axial openings for an object to be coated.

3. A rotatable drum comprising a cylindrically shaped casting made up in sections, each section being provided with inwardly extending lugs, and

means including said lugs for fastening the sections in the form of a cylinder, both inner and outer castings having axial openings for an object to be coated.

4. A rotatable drum comprising a cylindrically shaped casting made up in sections, each section being provided with inwardly extending lugs, means including said lugs for fastening the sections in the form of a cylinder, a second cylin-v drically shaped casting telescoping the first casting comprising a plurality of sections, and means for fastening the sections together.

5. A rotatable drum comprising a cylindrically shaped casting made up in sections, each section beingprovided with inwardly extending lugs, means including said lugs for fastening the sections in the form of a cylinder, a second cylindrically shaped casting telescoping the .first casting comprising a plurality of sections, means for fastening the sections together, and means for uniting the two castings into a unitary structure.

6. In a device for treating conduits, a rotatable drum, a fluid opening into said drum, a stationary fluid connection and means for creating a fluid tight joint between said fluid connection and said drum, including a plurality of expanding rings said rotatable drum adapted to have a conduit extended axially therethrough.

'7. In a device for treating conduits, a rotatable drum, a fluid opening into said drum, a stationary fluid connection, means for creating a fluid tight joint between said fluid connection and said drum, including a plurality of expanding rings, and means for supporting said drum said rotatable drum adapted to have a conduit extended axially therethrough.

8. In a device for treating conduits, a rotatable drum having fluid openings therethrough, a stationary fluid connection adjacent said drum, and means for creating a fluid tight joint between the openings in said drum and said fluid connection, including a plurality of expanding ring elements said rotatable drum adapted to have a conduit extended axially therethrough.

9. In a device for treating conduits, a rotatable drum having fluid openings therethrough, a stationary fluid connection adjacent said drum, and means for creating a fluid tight joint between the openings in said drum and said fluid connection, including a plurality of expanding ring elements, said ring elements being composed of a plurality of sections said rotatable drum adapted to have a conduit extended axially therethrough.

10. In a device for treating conduits, a rotatable drum comprising two telescoping cylinders fastened together, openings about the periphery of the outer cylinder, a stationary ring member, grooves in the periphery of the outer cylinder and a plurality of expanding rings adapted to fit in said grooves said rotatable drum adapted to have a conduit extended axially therethrough.

11. In a device for treating conduits, a rotatable drum comprising two telescoping cylinders fastened together, openings in the periphery-of the outer cylinder, a ring member encircling the outer cylinder and means including said ring member, and a plurality of expanding rings for forming a fluid tight connection through said stationary ring to the openings in said outer cylinder said rotatable drum adapted to have a conduit extended axially therethrough.

12. In a device for treating conduits, a rotatable drum comprising two telescoping cylinders fastened together, openings in the periphery of the outer cylinder, a ring member encircling the outer cylinder and means including said ring member, and a plurality of expanding rings for forming a fluid-tight connection through said stationary ring to the openings in said outer cylinder, said expanding ring members being formed of a plurality of sections said rotatable drum adapted to have a conduit extended axially therethrough.

13. A rotatable drum comprising a cylindrically shaped casting made up in sections, means for fastening the sections together in the form of a cylinder, a second cylindrically shaped casting telescoping the first casting comprising a plurality of sections, and means for fastening the sections together, said drum having central side openings.

14. A rotatable drum comprising a cylindrically shaped casting made up in sections, means for fastening the sections together, a second cylindrically shaped casting telescoping the first casting comprising a plurality of sections, means for fastening the sections together, and means for uniting the two castings into a unitary structure, said drum having central side openings.

15. In a device for treating conduits, a rotatable drum comprising a cylindrically shaped casting, a second cylindrically shaped casting telescoping the first casting, a chamber formed between the two castings, a supporting means for the rotatable drum, and means for feeding'a fluid to said drum, said drum having central side openings.

16. In a device for treating conduits, a rotatable drum comprising a cylindrically shaped casting, a second cylindrically shaped casting telescoping the first casting, means for securing the two castings together, a supporting means for the rotatable drum, and sealing means interposed between the rotatable drum and supporting means said drum having central side openings.-

17. In a device for treating conduits, a rotatable drum comprising a cylindrically shaped casting, a second cylindrically shaped casting telescoping the first casting, means for securing the two castings together, a supporting means for the rotatable drum, a passage for feeding a fluid to said drum through the supporting means, and fluid sealing means disposed on opposite sides of the passage, said drum having central side openmgs.

18. A device of the class specified comprising a rotatable drum having axial openings for the article to be coated, a peripheral material receiving and holding chamber and a peripheral opening for the inlet of coating material to said receiving and holding chamber.

l9. A device of the class specified comprising a rotatable drum having axial openings for the axial passage of the article to be coated, a peripheral material receiving and holding chamber having apertures opening inwardly for the inward distribution of material and a peripheral inlet for the admission of coating material to said material receiving and holding chamber.

20. A device of the class specified comprising a rotary drum having inner and outer cylindrical members both of which have axial openings to permit the axial passage of the article to be coated, the inner cylindrical member having peripheral openings to permit passage of coating fluid to its interior from the outer peripheral member and inlet openings for the coating material in the periphery of the outer cylindrical member.

HORACE L. HARRISON. 

